Pack_it is a project mainly written in Ruby, it's free.
A simple way to create a folder with the different files between two git branches
Pack It - Create a folder with the different files between two git branches.
Example: ./pack_it.rb directory_package a_branch another_branch
directory_package => folder where the files will be copied a_branch => first(main) branch used in the comparison (Example: master) another_branch = second branch used in the comparison (Example: my_fixes)